[PATCH 4.19 068/131] regmap: Fix memory leak from regmap_register_patch

[Sasha Levin]

From: Charles Keepax <ckee...@opensource.cirrus.com>

[ Upstream commit 95b2c3ec4cb1689db2389c251d39f64490ba641c ]

When a register patch is registered the reg_sequence is copied but the
memory allocated is never freed. Add a kfree in regmap_exit to clean it
up.

Fixes: 22f0d90a3482 ("regmap: Support register patch sets")
Signed-off-by: Charles Keepax <ckee...@opensource.cirrus.com>
Link: 
https://lore.kernel.org/r/20200617152129.19655-1-ckee...@opensource.cirrus.com
Signed-off-by: Mark Brown <broo...@kernel.org>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
 drivers/base/regmap/regmap.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index 6c9f6988bc093..b38b2d8c333d5 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -1336,6 +1336,7 @@ void regmap_exit(struct regmap *map)
        if (map->hwlock)
                hwspin_lock_free(map->hwlock);
        kfree_const(map->name);
+       kfree(map->patch);
        kfree(map);
 }
 EXPORT_SYMBOL_GPL(regmap_exit);
-- 
2.25.1